welcom page!

<button nz-button nzType="primary" (click)="showModal()">Primary Button</button>


<nz-modal [(nzVisible)]="isVisible"
          nzTitle="The first Modal"
          (nzOnCancel)="handleCancel()" (nzOnOk)="handleOk()">
  <p>Content one</p>
  <p>Content two</p>
  <p>Content three</p>
  <p>Content three</p>
</nz-modal>
